Ali licor

Thank you for your proposal but the DMM6500 will be too expensive for me. However, with the KEITHLEY 6485 I manage to have usable results with a sample that gives high current peaks. But when it comes to the samples where the current is very high, I notice that there is too much noise and I cannot distinguish certain current peaks with the noisy signals. Do you think there is a way to filter the noise without slowing down the acquisition ?<br> You will see some signals when I take my empty measurements in the attachment.

Hello Molina,<br> <br> In fact for my application I need to go much lower than 95 ms between two measurements because I can't get all my desired current peaks. I need at least 10 ms between two measurements. Since I apply constraints every 333 ms on my sample to have current peaks in order to be able to store energy. Since I cannot synchronize the test bench and the abview, the ideal would be to have the time between two measurements in 1ms to be sure that I can measure all my peaks with precision.<br> <br> <br> Do you think this is impossible with the KEITHLEY 6485 pico-ammeter?

<p>Hello Molina,&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; thank you for your help. However, the time between two measurements is enormous compared to my application despite my attempts to speed up the execution rate of the pico-ammeter by changing the NPLC to 0.01. Currently, I only retrieve two measurements every second.</p> <p>As a reminder, in the context of my application, I need to measure the current of piezoelectric films when they are subjected to compressions at a frequency of 7 Hz. Indeed, the time between two measurements is very important compared to my needs (I need to retrieve 100 measurements every second at least) and display them in real-time on LabView.</p> <p>However, I have an attached program that allows me to retrieve the 100 measurements every second and display them in real-time on LabVIEW. Unfortunately, these measurements do not seem correct to me, as the first measurement I retrieve is on the order of hundreds of microamps in a vacuum, while the subsequent measurements are on the order of tens of nanoamps.&#160;So from my application I will recover only some nano ampere.</p> <p>Therefore, I am looking for help in solving this problem. Any suggestions would be greatly appreciated. Thank you in advance for your help.</p>

<p>Hello,</p> <p>I currently need help to perform a real-time acquisition of very low current data at a high speed of 100 measurements per second using Labview software and a KEITHLEY 6485 picoammeter with a GPIB.</p> <p>Currently, I use a method that allows me to read 100 measurements in one second and display them on Labview, but my goal is to display these measurements in real-time on Labview. I have included a copy of my VI for reference.</p> <p>I am looking for solutions or advice to achieve this goal. Any help would be greatly appreciated.</p> <p>Thank you in advance for your help.&quot;</p>